APA aipamena

SANDRA ALTERS. (1999). Biology: Understanding life. Sudbury, Massachusetts: John and Bartlett.

Chicago Style aipamena

SANDRA ALTERS. Biology: Understanding Life. Sudbury, Massachusetts: John and Bartlett, 1999.

MLA aipamena

SANDRA ALTERS. Biology: Understanding Life. Sudbury, Massachusetts: John and Bartlett, 1999.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.